Money from sports-hunting permits can fund protected parks that shelter wildlife and engage local communities in animal protection, but does paying such exorbitant fees actually help or hurt wildlife conservation?

When you order fish at a restaurant, you may not be getting what you think. The F.D.A. approves lists of fish species that can be grouped into labels such as snappers and groupers. The International advocacy organization Oceana explains.

During the dinosaur age, ichthyosaurs — large marine reptiles that look like dolphins — flourished in prehistoric oceans. But as competition in these areas grew, ichthyosaurs lost both territory and species before gradually going extinct, a study finds.

Boa constrictors are notorious for their deadly grip, squeezing their next meal until it expires. But scientists have long wondered whether this fatal hug kills prey by suffocation or by obstructing blood flow in the snake's victims.

Chimpanzees can quickly identify the faces of other chimps, as well as those of human adults and babies, according to new research that suggests humans' closest living relatives look at faces holistically like humans do.

A young, great white shark had a near-death experience when the retreating tide left it stranded on a beach in Cape Cod on Monday afternoon (July 13). Beachgoers spotted the giant fish writhing on the sand, and threw water on its gills to help it breathe.

If the northern giant mouse lemur were the size of a human, its testes would be as big as grapefruits. To capture these testes measurements, scientists had to be quick on their feet in the forests of Madagascar.

It's time to call Guinness World Records: Researchers on an Antarctic expedition have uncovered sperm cells dating to a whopping 50 million years ago, making these the oldest known animal sperm cells, a new study finds.